#include <bits/stdc++.h>

using namespace std;

const int INF = 1 << 30;

template <typename T>
bool chmin(T &a, const T &b) {
  if (a > b) {
    a = b;
    return true;
  }
  return false;
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int N;
  cin >> N;
  vector<int> S(N);
  for (int i = 0; i < N; i++) {
    cin >> S[i];
  }
  int M;
  cin >> M;
  vector<vector<int>> G(N, vector<int>(N, INF));
  for (int i = 0; i < M; i++) {
    int a, b, c;
    cin >> a >> b >> c;
    G[a][b] = G[b][a] = c;
  }
  for (int k = 0; k < N; k++) {
    for (int i = 0; i < N; i++) {
      for (int j = 0; j < N; j++) {
        if (G[i][k] == INF || G[k][j] == INF) continue;
        chmin(G[i][j], G[i][k] + G[k][j]);
      }
    }
  }
  int res = INF;
  for (int i = 1; i < N - 1; i++) {
    for (int j = 1; j < N - 1; j++) {
      if (i == j) continue;
      if (G[0][i] == INF || G[i][j] == INF || G[j][N - 1] == INF) continue;
      res = min(res, G[0][i] + G[i][j] + G[j][N - 1] + S[i] + S[j]);
    }
  }
  cout << res << '\n';
  return 0;
}